Line-interrupter for electric railways.



A. THODE.

LINE INTERRUPTBR FOR ELECTRIC RAILWAYS.

APPLICATION FILED JULY 8, 1908.

Patented Nov. 24., 1908.

QQQEGQ.

UNITED ALBERT 'lHODE, OF HAMBURG, GERMANY.

LINE-INTERBUPTER FOR ELECTRIC RAILWAYS.

Application filed July To all whom it may concern:

lie it known that l. Ansuirr 'ln'omi, en-

gineer, a subject of theKingdoin of Prussia,

residing in Hamburg, in the Kingdom of Prussia, German Empire, Kaiser \Vilhelmstrasse 20-26, have invented certain new and useful Improvements in Line-interrupter-s for Electric Railways, of which the following is a specification.

The present invention relates to electric railway conductors and is to provide an improved line interrupter for the same.

\Vhen constrtuctingline interrupters for electric railway coluluctors there is a certain ditficulty to be overcome inasmuch as the insulator which is to be inserted in the line has to take up the draft of the wires on the -one hand, and on the other hand is also subject. to the pressure of the current collector which is directed vertically upwards. Having regard to the draft which is to be taken up, the material must. be as tough as possible, whereas again having regard to the resistance to the upwardly directed pressure of the collector it appears desirable to use a material which is as hard as possible.

Insulating materials which are atthe same time tough and of sutlicient tensile strength and which, on the other hand, are very hard are however unknown.

an important object Specification of Letters Patent.

a, 1908. Serial No. 442,514.

, tended for mixed working wlth trolleys and For this reason. 210- I cording to the present invention the a rrangement is such that the real separating or dividing piece of the line interrupter consists of a. material which is very tough and has a high tensile strength, but at. the same time the line interrupter is provided with insulating or insulated pieces of hard material which are so arranged that they raise the current collector somewhat from the real separating piece and so take up the pressure of the former, has-only to take. up'the draft of the wires and, if desired, serves as guide for the. collector.

in order that the invention may be clearly understtmd, reference is made to the accommnying drawing, in which one embodiment is re )resented by way of example, and in whic v Figure. l is a side elevation of one form of the line interrupter, Fig. 2 a top plan view, the roof having been removed, F1 3 a vertical transverse section in the p ane whereas the separating piece rammed Nov. 24, 1908.

e l ,1'--.1' in Fig. 1, and Fig. verse section in the plane l ;I roof and some other parts not being shown. The form of the invention represented is ina vertical trans- In Fig. 4, however, the deworking with slid for the sake of sliding bows. vices which are used for ing bows are not shown. greater clearness.

-The new line interrupter possesses a separating or dividing piece 1, the material of which is selected only with regard to tensile strength and ductility, but not with regard to hardness. 'lhe. separating piece m,ay consist of wood for example. The wirestQ are connected with the separating piece insulator 1 in optional known manner, ccording to the drawing by the forks 3.

Pieces 5 means of bolts 4 laterally of the separating piece 1. The bottom faces of these pieces of porcelain are situated so that the flanges of a trolley traveling under the interrupter run onto these bottom faces, so that the groove of the trolley is raised from the separating piece 1. then only the trolley directed pressure of the collector is taken up by the pieces 5 of porcelain, thus by a material which is selected only with regard to its hardness. but not with regard to tensile The latter strength. The flanges of the trolley run onto the pieces of porcelain by means 0 metallic guides 6 which are attached to the separating piece 1.

If the line interrupter is to be employed for use with sliding bows also, plates 7 are attached to the pieces 5 of porcelain, preferably by bolts 4. The. bottom edges of these plates 7 are situated somewhat lower than those of the dividing piece 1. Thus they lift the bow, which is passing the interrupter, from the dividing piece 1, so that in this case also the latter can be selected ductile and relatively soft, since the upwardly directed pressure of the bow is taken up by the plates 7 which on their part are made of a hard material. Accordingto the to be understood that other insulating of porcelain are attached bysomewhat 1 serves in addition for guiding laterally, whereas the upwardly in Fig. 1, the

material corresponding to the above mentioned requirements may also be employed instead of a metal.

W hat I claim as my invention and desire to secure. by Letters Patent is:

1. In a line interrupter of the character described, the combination with an insulator having Wires attached to the same, of insulators consisting of hard material arranged latcrally on the former insulator and adapted to raise a trolley passing under the same from the former insulator.

2. In a line interrupter of the character described, the combination with an insulator having Wires attached to the same, of porcelain insulators attached one on each side i of the former insulator and adapted to raise a trolley passing under the same from the former insulator.

3. In a. line interrupter of the character described, the combination With an insulator having Wires attached to the same, of plates to raise a sliding bow from the former insulator When the bow passes under the line mterruptcr, substantially shown.

my name this 24th day of June 1908 in the presence of tWo subscribing Witnesses.

ALBERT TH ODE.

lVitn esses: I

HENRY HAsrnn, \Vomrzamu H A l r'r.

I11 Witness whereof I have hereunto signed 

